1. Potting the flop isn't so bad really. Your main goal here is to get him off of TT-QQ and bet flop shove turn might be the best way to go about it.

2. As much as it sucks, I think you have to fold to the all-in. You're getting 44% pot odds, you're only 47/53 vs. a bare ace which is the best-case scenario. There's plenty of stuff in his range that has you destroyed.

3. I'd probably just fold the flop unless I'd seen this player make pot sized bets with weak hands before, but I don't think this is quite as bad of a calldown as you're making it out to be.

4. Fold the flop for sure, of the hands he might cold-call a reraise with you basically don't beat any of them. This is a really bad calldown.